System: High Availability - missing syslog caused by netflow_xmlrpc_sync() shadowing the section

PR: https://github.com/opnsense/core/issues/9481

(cherry picked from commit 6e478cf67131b2646ea53e2da3bb855a74bb5b3b)
(cherry picked from commit 4bfa65463c869d0e9decd26aa9a3e1e315e8b579)

src/etc/inc/plugins.inc.d/core.inc

@@ -375,7 +375,7 @@ function core_xmlrpc_sync()
     $result[] = [
         'description' => gettext('System logging'),
         'section' => 'syslog,OPNsense.Syslog',
-        'id' => 'syslog',
+        'id' => 'syslog-ng',
         'services' => ['syslogd'],
     ];
 

src/etc/inc/plugins.inc.d/netflow.inc

@@ -80,13 +80,10 @@ function netflow_services()
  */
 function netflow_xmlrpc_sync()
 {
-    $result = [];
-    $result[] = array(
+    return [[
         'description' => gettext('Netflow / Insight'),
+        'id' => 'syslog', /* historic yet tolerated typo */
         'section' => 'OPNsense.Netflow',
-        'id' => 'syslog',
-        'services' => ["samplicate", "flowd_aggregate"],
-    );
-
-    return $result;
+        'services' => ['samplicate', 'flowd_aggregate'],
+    ]];
 }